COLLISIONAL QUENCHING OF H(3L) ATOMS BY MOLECULAR-HYDROGEN

Authors
LAUER S LIEBEL H VOLLWEILER F WILHELMI O KNEIP R FLEMMING E SCHMORANZER H GLASSMAUJEAN M
Citation
S. Lauer et al., COLLISIONAL QUENCHING OF H(3L) ATOMS BY MOLECULAR-HYDROGEN, Journal of physics. B, Atomic molecular and optical physics, 31(13), 1998, pp. 3049-3056
Citations number
19
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
31
Issue
13
Year of publication
1998
Pages
3049 - 3056
Database
ISI
SICI code
0953-4075(1998)31:13<3049:CQOHAB>2.0.ZU;2-Z
Abstract
The de-excitation cross sections of H(3l) atoms colliding with molecul ar hydrogen (T = 300 K) were determined in the velocity range of 2-7 k m s(-1). At a mean velocity of 5 km s(-1) the de-excitation cross sect ions are sigma(3s) = 170 +/- 7 Angstrom(2), sigma(3d) = 129 +/- 7 Angs trom(2) and sigma(3p) = 270 +/- 45 Angstrom(2). The velocity dependenc e of the de-excitation cross sections observed in the experiment agree s with the H-2 quadrupole-H dipole interaction and with the quantum ch aracter of the molecular rotation.